TY - JOUR
T1 - Distribution of nanoclay in a new TPV/nanoclay composite prepared through dynamic vulcanization
AU - Dutta, Sayantani
AU - Sengupta, Srijoni
AU - Chanda, Jagannath
AU - Das, Amit
AU - Wiessner, Sven
AU - Ray, Suprakash Sinha
AU - Bandyopadhyay, Abhijit
N1 - Publisher Copyright:
© 2020
PY - 2020/3
Y1 - 2020/3
N2 - In this article distribution of nanoclay between the two phases of a new class of dynamically vulcanized TPV based on POE/EVA(Polyethylene octene elastomer/ethylene vinyl acetate copolymer) elastomers prepared with various amounts of organoclay (0.5, 1 and 3 wt%) using dicumyl peroxide (DCP) as vulcanizing agent by reactive melt blending process has been studied. Different specimens of POE and POE/EVA blend with and without clay were prepared. The effects of organoclay on mechanical properties, swelling kinetics, crystallinity, vulcanization characteristics, dynamic mechanical behaviour, electrical properties and morphology were studied. DMA and morphological analysis revealed the formation of a Thermoplastic vulcanizate. XRD analysis showed decrease in crystallinity on addition of EVA in POE matrix. However, morphological observation of the fractured surface suggested that the smaller EVA domain was quite uniformly distributed into the POE phase and the clay phase was predominantly dispersed in the EVA phase of the TPVs and 0.5% clay mainly improved the mechanical properties and elongation of the blends. Swelling characteristics, electrical properties and storage modulus were also improved with the clay in case of the blend containing higher EVA content which further supports the fact that nanoclay was preferably distributed in the more polar EVA phase.
AB - In this article distribution of nanoclay between the two phases of a new class of dynamically vulcanized TPV based on POE/EVA(Polyethylene octene elastomer/ethylene vinyl acetate copolymer) elastomers prepared with various amounts of organoclay (0.5, 1 and 3 wt%) using dicumyl peroxide (DCP) as vulcanizing agent by reactive melt blending process has been studied. Different specimens of POE and POE/EVA blend with and without clay were prepared. The effects of organoclay on mechanical properties, swelling kinetics, crystallinity, vulcanization characteristics, dynamic mechanical behaviour, electrical properties and morphology were studied. DMA and morphological analysis revealed the formation of a Thermoplastic vulcanizate. XRD analysis showed decrease in crystallinity on addition of EVA in POE matrix. However, morphological observation of the fractured surface suggested that the smaller EVA domain was quite uniformly distributed into the POE phase and the clay phase was predominantly dispersed in the EVA phase of the TPVs and 0.5% clay mainly improved the mechanical properties and elongation of the blends. Swelling characteristics, electrical properties and storage modulus were also improved with the clay in case of the blend containing higher EVA content which further supports the fact that nanoclay was preferably distributed in the more polar EVA phase.
KW - DMA
KW - Dynamically vulcanized
KW - Organoclay
KW - SEM
KW - Thermoplastic vulcanizate
KW - XRD
UR - http://www.scopus.com/inward/record.url?scp=85078678931&partnerID=8YFLogxK
U2 - 10.1016/j.polymertesting.2020.106374
DO - 10.1016/j.polymertesting.2020.106374
M3 - Article
AN - SCOPUS:85078678931
SN - 0142-9418
VL - 83
JO - Polymer Testing
JF - Polymer Testing
M1 - 106374
ER -